We are selling Vacuum Cannons in the shop. I am setting it up with some trepidation: if nobody buys one I will be several tens of pounds out of pocket. If everyone buys one I will be unable to make them fast enough to keep up with demand. Of course, the most likely thing is somewhere in-between. Being part-time I can respond quite fast, and I can limit the number I have to make and dispatch by setting the stock levels in our shop software. And through the piss-poor planning you have come to expect, we are releasing them a day before I go away for a week over half-term. Oops.
The pay-off is that more people will get to
play demonstrate with this fantastic toy piece of equipment. I had never heard of it, nor had Robin, but CLEAPSS are all over it so it must be pretty well known. When I tested the prototype in the kitchen I didn’t really think through the consequences of a ball travelling at several hundred miles an hour vs my kitchen wall. There was ball debris everywhere; I found one shard 5m away on a high window sill two weeks later.
I have set up stock of 2 in the shop but with unlimited back orders. Once I know what the demand is (or indeed if there is any!) I will start making and shipping them in batches. I intend to keep doing them at £20 until I lose the will to go through all the guff of making, packing and dispatching them. Then I will either give up or raise the price. So buy now to avoid disappointment.
Anyone with access to a vacuum pump can of course make their own. If that is your plan, you could use the CLEAPSS guidance I mentioned above. I also made my own “How To” notes which includes links to where I purchased things.
If you make one, please let us know how it goes.